A snippet from the customer reviews: «[...] This collection also covers a wide range of the American musical experience. "Rock Island Line" is performed by a group of convicts at the Arkansas Cummins State Farm. The traditional folk song "Soldier's Joy" is performed (in Lomax's words) by "two blind men and three day laborers." "Creek Lullaby" is sung a capella by a young Native American girl identified only as Margaret, whose haunting vocal is made all the more memorable by singing the song in Creek. Fiddler Jess Morris was a working cowboy in Texas when he recorded "Goodbye, Old Paint." [...]»

This is the Deadwood soundtrack which includes the song "Creek Lullaby" by someone called Margaret who I presume was a young Native American woman at the time of the song's recording in 1943(ish). The song is presented in the Creek language which piqued my interest when it was played at the end credits of episode 2 of Deadwood. --Jarkko aka 'jkniiv'